Regulating mechanism for combustion engines



June 22, 1926. 1,589,789

I P. DAIMLER REGULATING MECHANISM FOR COMBUSTION ENGINES Filed August 7, 1920 Jnuezzlav W h: I W

Patented June 22, 1926.

UNITED STATES 1,589,789 PATENT OFFICE.

PAUL DAIMLER, OF CANNSTATT, GERMANY, ASSIGNOR TO THE FIRM DAIMLER- MOTOREN-GE-SELLSCHAFT, OF UNTERTURKHEIM,- GERMANY.

REGULATING MECHANISM FOR COMBUSTION ENGINES.

Application filed August 7, 1920, Serial No. 402,067, and in Germany August 5, 1918.

(GRANTED UNDER TH'E IROVISIQNS OF THE ACT OF. MARCH 3, 1921, 41 STAT. L, 1313.)

tional charge of air after the throttle valve of the carburetter has been opened in a certain degree.

An im ortant feature in the arrangement and combination of parts constituting the 1 invention resides in making the operation of the compressor dependent upon the throttle valve of the carburetter having been adjusted previously thereto, because other- Wise, if the two admission members would be adjusted independent from one another,

it might occur that the compressor be made to deliver the compressed air into the carburetter at an improper time which might have, under circumstances, hurtful consequences for the power engine, as well as for the machine or machines driven by it.

Now, according to this invention, the carburetter and the compressor are actuated and adjusted one after the other with aid of the co-operation of a spring or an equivalent member inserted into the common actuating member for the carburetter and the com:- pressor or forming a part of this member. A part of the adjusting device for the throttle valve of the carburetter is held fast after it has covered a certain path in the direction in which said valve is opened; then on that common actuating member being further moved in the same direction, the operating rod for the valve in question is extended or elongated and at the same time another rod displaces a sleeve forming, an annular slide which shuts an aperture provided in the connection pipe between the compressor and the carburetter. Up to this moment the air which the compressor delivered had escaped into the atmosphere through that aperture, but as soon as this latter is closed by the sleeve or slide, the air is forced through the carburetter into the working cylinder or cylinders of the engine. In order to make my invention, more clear, I refer to the accompanying drawing in which Fig. 1 is a diagrammatical illustration of an adjusting device constructed according to this invention, and Fig. 2 shows some parts of it in another position.

The motor a is connected with the compressor b which, in its. turn, is connected with the carburetter cl by a pipe 0. The throttle valve d of the carburetor is connected with an operating rod e which in turn is connected with an operating lever h fulcrumed at g. The connection between the rod 6 and lever h is such that the latter is capable of a further movement after the actuations of the throttle valve d and its rod 6 have been arrested at a predetermined point; in the illustrated example this result is attained by providing a spring 7 in the connection from the rod e to the lever h. The latter is connected also with a rod 71 attached at its other end to a sleeve is forming an annular slide and being so arranged upon the pipe 0 as to be adapted to close and open an apen ture 0 provided in the pipe 0.

The manner of operation of this combination and arrangement of parts is as follows:

Supposing, the lever h which is the common operating member for the rods 6 and i have been turned along its guide quadrant from the position a into the position y, the

throttle valve (1 of the carburetter d is open in a certain measure; further opening of said throttle valve d is prevented by providing suitable means to arrest the operation of the rod e at a predetermined point. On moving the lever h from the position 0 into the position 2 the rod e or its spring respec-tively, is extended or elongated, but the rod 5 draws the sleeve or slidelc' oven the aperture 0 of the pipe 0. Owing to the communication of this pipe with" the atmosphere being now interrupted, theair delivered by the compressd is forced into the carburetter and thus to and into the working cylinder or cylinders of ,the internal combustion engine.

When moving the lever it back from the;

position 2 into the position y, the aperture 0 is opened, but the position of the throttle valve al is not yet altered, because merely the spring f contracts. Only when the lever 71 is further moved back from the position 3 to the position x, also the throttle valve (2 is again actuated, viz, closed.

Having thus particularly described the nature of my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. The combination of an internal combust1on engine ncludlng a carbureter, a throttle valve for sand carbureter, a source of compressed air connected with said carbureter, means for controlling the passage of compressel air to said carbureter, an operating lever and connections extending from said lever to said throttle valve and said compressed air controlling means respectively, said connections being such as to operate the throttle valve to a predetermined point and to permit a subsequent independent movement of the operating lever to independently actuate said compressed air controlling means.

2. The combination of an internal combust-ion engine including a carbureter, a throttle valve for said carbureter, a source of compressed air connected with said carburelcr. means for controlling the nirsagre of compressed air to said carbureter, an operating lever, a non-extensible connection between said lever and said compressed air controlling means and an extensible con nection between said lever and said throttle valve whereby the latter is operated to a predetermined point after which said connection is extended by a further operation of said lever to operate said compressed air controlling means Without producing any further operation of said throttle valve.

3. The combination of an internal combastion engine, including a carburetor, a throttle valve for said carbureter, a compressor connected with said earbureter and the atmosphere, a valve for controlling the flow of compressed air and for selectively diverting it to the carbureter or to the atmosphere, an operating lever, a rod connecting the latter with said compressed air valve, a rod connected with said lever and throttle valve and a spring in the latter connection to permit an extension thereof by a continued operation of said lever after said throttle valve has been operated to a predetermined point and to cause said compressed air valve to be actuated independently of said throttle valve.

In testimony whereof I aflix my signature.

PAUL DAIMLER. 

